Robert Downey Jr. Co-Starring in Gravity Looking Doubtful

Like The Hobbit, the single sure thing about Gravity is suddenly in great doubt. Although the reasoning is free from any dickhead actors' unions causing trouble for everyone else.

Robert Downey Jr. may have to back out of the 3D space-set thriller thanks to several scheduling conflicts (read: The Avengers), according to "TOLDJA." Production has been delayed several times as Warner Brothers and director Alfonso Cuaron looked for an actress bankable enough to justify the complex production's hefty budget.

Angelina Jolie turned them down until her face turned red and an attempt to commit a post-Black Swan Natalie Portman proved fruitless. It wasn't until Sandra Bullock (fresh off an Oscar and rejuvenated box-office clout) agreed to headline that things were finally turning around.

WB is downplaying Downey's probable exit (of course, they are) and stating their intent to sorting out a new suitable schedule to retain his services (again, of course, they are).

Yes, it's blue-balls to the production. But, as widely known for some time, the make or break of Gravity will be on Bullock's shoulders and not Downey's – his role is that of supporting, and by process of elimination would suggest he doesn't last too terribly into the film. It sucks to lose Downey, but this by no means suggests the project is fucked. Hell, I'm glad things are finally commencing on it.